package com.duoqin.syncassistant;

import java.io.File;
import java.lang.reflect.Method;
import android.content.Context;
import dalvik.system.DexFile;

public class SystemPropertiesProxy
{

    /**
     * This class cannot be instantiated
     */
    private SystemPropertiesProxy(){

    }

    /**
     * Get the value for the given key.
     * @return an empty string if the key isn't found
     * @throws IllegalArgumentException if the key exceeds 32 characters
     */
    public static String get(Context context, String key) throws IllegalArgumentException {

        String ret= "";

        try{

            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = cl.loadClass("android.os.SystemProperties");

            //Parameters Types
            @SuppressWarnings("rawtypes")
            Class[] paramTypes= new Class[1];
            paramTypes[0]= String.class;

            Method get = SystemProperties.getMethod("get", paramTypes);

            //Parameters
            Object[] params= new Object[1];
            params[0]= new String(key);

            ret= (String) get.invoke(SystemProperties, params);

        }catch( IllegalArgumentException iAE ){
            throw iAE;
        }catch( Exception e ){
            ret= "";
            //TODO
        }

        return ret;

    }

    /**
     * Get the value for the given key.
     * @return if the key isn't found, return def if it isn't null, or an empty string otherwise
     * @throws IllegalArgumentException if the key exceeds 32 characters
     */
    public static String get(Context context, String key, String def) throws IllegalArgumentException {

        String ret= def;

        try{

            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = cl.loadClass("android.os.SystemProperties");

            //Parameters Types
            @SuppressWarnings("rawtypes")
            Class[] paramTypes= new Class[2];
            paramTypes[0]= String.class;
            paramTypes[1]= String.class;

            Method get = SystemProperties.getMethod("get", paramTypes);

            //Parameters
            Object[] params= new Object[2];
            params[0]= new String(key);
            params[1]= new String(def);

            ret= (String) get.invoke(SystemProperties, params);

        }catch( IllegalArgumentException iAE ){
            throw iAE;
        }catch( Exception e ){
            ret= def;
            //TODO
        }

        return ret;

    }

    /**
     * Get the value for the given key, and return as an integer.
     * @param key the key to lookup
     * @param def a default value to return
     * @return the key parsed as an integer, or def if the key isn't found or
     *         cannot be parsed
     * @throws IllegalArgumentException if the key exceeds 32 characters
     */
    public static Integer getInt(Context context, String key, int def) throws IllegalArgumentException {

        Integer ret= def;

        try{

            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = cl.loadClass("android.os.SystemProperties");

            //Parameters Types
            @SuppressWarnings("rawtypes")
            Class[] paramTypes= new Class[2];
            paramTypes[0]= String.class;
            paramTypes[1]= int.class;

            Method getInt = SystemProperties.getMethod("getInt", paramTypes);

            //Parameters
            Object[] params= new Object[2];
            params[0]= new String(key);
            params[1]= new Integer(def);

            ret= (Integer) getInt.invoke(SystemProperties, params);

        }catch( IllegalArgumentException iAE ){
            throw iAE;
        }catch( Exception e ){
            ret= def;
            //TODO
        }

        return ret;

    }

    /**
     * Get the value for the given key, and return as a long.
     * @param key the key to lookup
     * @param def a default value to return
     * @return the key parsed as a long, or def if the key isn't found or
     *         cannot be parsed
     * @throws IllegalArgumentException if the key exceeds 32 characters
     */
    public static Long getLong(Context context, String key, long def) throws IllegalArgumentException {

        Long ret= def;

        try{

            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties= cl.loadClass("android.os.SystemProperties");

            //Parameters Types
            @SuppressWarnings("rawtypes")
            Class[] paramTypes= new Class[2];
            paramTypes[0]= String.class;
            paramTypes[1]= long.class;

            Method getLong = SystemProperties.getMethod("getLong", paramTypes);

            //Parameters
            Object[] params= new Object[2];
            params[0]= new String(key);
            params[1]= new Long(def);

            ret= (Long) getLong.invoke(SystemProperties, params);

        }catch( IllegalArgumentException iAE ){
            throw iAE;
        }catch( Exception e ){
            ret= def;
            //TODO
        }

        return ret;

    }

    /**
     * Get the value for the given key, returned as a boolean.
     * Values 'n', 'no', '0', 'false' or 'off' are considered false.
     * Values 'y', 'yes', '1', 'true' or 'on' are considered true.
     * (case insensitive).
     * If the key does not exist, or has any other value, then the default
     * result is returned.
     * @param key the key to lookup
     * @param def a default value to return
     * @return the key parsed as a boolean, or def if the key isn't found or is
     *         not able to be parsed as a boolean.
     * @throws IllegalArgumentException if the key exceeds 32 characters
     */
    public static Boolean getBoolean(Context context, String key, boolean def) throws IllegalArgumentException {

        Boolean ret= def;

        try{

            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = cl.loadClass("android.os.SystemProperties");

            //Parameters Types
            @SuppressWarnings("rawtypes")
            Class[] paramTypes= new Class[2];
            paramTypes[0]= String.class;
            paramTypes[1]= boolean.class;

            Method getBoolean = SystemProperties.getMethod("getBoolean", paramTypes);

            //Parameters
            Object[] params= new Object[2];
            params[0]= new String(key);
            params[1]= new Boolean(def);

            ret= (Boolean) getBoolean.invoke(SystemProperties, params);

        }catch( IllegalArgumentException iAE ){
            throw iAE;
        }catch( Exception e ){
            ret= def;
            //TODO
        }

        return ret;

    }

    /**
     * Set the value for the given key.
     * @throws IllegalArgumentException if the key exceeds 32 characters
     * @throws IllegalArgumentException if the value exceeds 92 characters
     */
    public static void set(Context context, String key, String val) throws IllegalArgumentException {

        try{

            @SuppressWarnings("unused")
            DexFile df = new DexFile(new File("/system/app/Settings.apk"));
            @SuppressWarnings("unused")
            ClassLoader cl = context.getClassLoader();
            @SuppressWarnings("rawtypes")
            Class SystemProperties = Class.forName("android.os.SystemProperties");

            //Parameters Types
            @SuppressWarnings("rawtypes")
            Class[] paramTypes= new Class[2];
            paramTypes[0]= String.class;
            paramTypes[1]= String.class;

            Method set = SystemProperties.getMethod("set", paramTypes);

            //Parameters
            Object[] params= new Object[2];
            params[0]= new String(key);
            params[1]= new String(val);

            set.invoke(SystemProperties, params);

        }catch( IllegalArgumentException iAE ){
            throw iAE;
        }catch( Exception e ){
            //TODO
        }

    }
}
